Before you wrote I was trying to switch to AHCI - but didn't know that first it has to be enabled in registry (as in link from microsoft you've given). So I changed it only in BIOS and windows crashed at boot, when colorful logo started to appear. Windows went in the repair mode and made successful recovery - and after that THE BOOT WAS FAS AGAIN! I mean the color logo start to appear in 3-4 seconds after title "windows 7" was shown. Then I followed your advices, disactivated Superfetch and properly installed AHCI drivers, changed BIOS to them as well. And... the boot is long again. I tried to repeat all I've done before to get it fixed, but this time, windows recovery didn't help. Grrrr.... I started to doubt if the complete windows reinstall would help it... >Disable Superfetch because this causes more read/write activies for a SSD and this reduces the lifetime. I can't really see a cause. But I can see that your run the SSD in IDE mode (ATAPI). So change this to AHCI: >http://support.microsoft.com/kb/922976 >and look if this improves speed. >>Hi Andre, >>I see your already an expert in analyzing boot traces and helping guys like me, who cannot read it properly enough. So, if you could have a look at my PM log and etl file, I'd be very grateful, I've spent an awful amount of time trying to learn the reason of boot delay that probably appeared after some windows update or after some >>operations with booting from usb. >>This appeared only two days after fresh install of W7 Ultimate on new SSD. Freshly installed system was booting in about 15-20 sec, now it's approx. 2,5 min. Don't know why first etl was about 130MB, now it's more than 300MB. Packed, together with ProcMon log I uploaded here: http://www66.zippysh...96662/file.html >>I've checked all drivers in Device Manager, and it shows them all updated. HDD's (SSD + Barracuda7200.11 500GB + Barracuda7200.12 1TB) are all up to date. >>Hope you'll find a minute to look at it. Big thanks in advance! P.S. I copied first two post from PM, for everyone's eyes.